java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:18:05,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:18:05,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:18:05,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:18:05,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:18:05,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:18:05,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:18:05,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:18:05,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:18:05,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:18:05,040 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:18:05,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:18:05,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:18:05,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:18:05,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:18:05,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:18:05,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:18:05,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:18:05,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:18:05,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:18:05,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:18:05,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:18:05,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:18:05,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:18:05,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:18:05,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:18:05,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:18:05,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:18:05,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:18:05,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:18:05,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:18:05,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:18:05,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:18:05,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:18:05,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:18:05,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:18:05,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:18:05,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:18:05,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:18:05,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:18:05,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:18:05,095 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:18:05,108 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:18:05,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:18:05,113 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:18:05,113 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:18:05,114 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl [2019-08-05 10:18:05,114 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl' [2019-08-05 10:18:05,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:18:05,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:18:05,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:18:05,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:18:05,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:18:05,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:18:05" (1/1) ... [2019-08-05 10:18:05,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:18:05" (1/1) ... [2019-08-05 10:18:05,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:18:05,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:18:05,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:18:05,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:18:05,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:18:05" (1/1) ... [2019-08-05 10:18:05,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:18:05" (1/1) ... [2019-08-05 10:18:05,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:18:05" (1/1) ... [2019-08-05 10:18:05,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:18:05" (1/1) ... [2019-08-05 10:18:05,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:18:05" (1/1) ... [2019-08-05 10:18:05,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:18:05" (1/1) ... [2019-08-05 10:18:05,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:18:05" (1/1) ... [2019-08-05 10:18:05,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:18:05,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:18:05,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:18:05,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:18:05,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:18:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-05 10:18:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 10:18:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 10:18:06,141 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 10:18:06,142 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-05 10:18:06,143 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:18:06 BoogieIcfgContainer [2019-08-05 10:18:06,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:18:06,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:18:06,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:18:06,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:18:06,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:18:05" (1/2) ... [2019-08-05 10:18:06,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc52124 and model type pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:18:06, skipping insertion in model container [2019-08-05 10:18:06,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:18:06" (2/2) ... [2019-08-05 10:18:06,152 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl [2019-08-05 10:18:06,162 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:18:06,169 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:18:06,186 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:18:06,213 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:18:06,213 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:18:06,213 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:18:06,213 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:18:06,214 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:18:06,214 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:18:06,214 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:18:06,214 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:18:06,215 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:18:06,228 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-08-05 10:18:06,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:18:06,236 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:18:06,237 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:18:06,239 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:18:06,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:18:06,245 INFO L82 PathProgramCache]: Analyzing trace with hash 979518, now seen corresponding path program 1 times [2019-08-05 10:18:06,304 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:18:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:18:06,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 13 conjunts are in the unsatisfiable core [2019-08-05 10:18:06,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:18:06,533 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:18:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:18:06,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:18:06,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 10:18:06,592 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:18:06,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:18:06,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:18:06,605 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2019-08-05 10:18:06,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:18:06,691 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-05 10:18:06,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:18:06,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 10:18:06,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:18:06,702 INFO L225 Difference]: With dead ends: 8 [2019-08-05 10:18:06,703 INFO L226 Difference]: Without dead ends: 8 [2019-08-05 10:18:06,705 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:18:06,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-05 10:18:06,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-08-05 10:18:06,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-05 10:18:06,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-05 10:18:06,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-08-05 10:18:06,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:18:06,737 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-05 10:18:06,737 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:18:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-05 10:18:06,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:18:06,738 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:18:06,738 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-08-05 10:18:06,739 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:18:06,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:18:06,739 INFO L82 PathProgramCache]: Analyzing trace with hash 941392015, now seen corresponding path program 1 times [2019-08-05 10:18:06,741 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:18:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:18:06,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjunts are in the unsatisfiable core [2019-08-05 10:18:06,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:18:06,979 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:18:07,290 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 15 [2019-08-05 10:18:07,313 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:18:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:18:07,446 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:18:07,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-08-05 10:18:07,448 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:18:07,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:18:07,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:18:07,449 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-08-05 10:18:07,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:18:07,690 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-08-05 10:18:07,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 10:18:07,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-08-05 10:18:07,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:18:07,691 INFO L225 Difference]: With dead ends: 10 [2019-08-05 10:18:07,692 INFO L226 Difference]: Without dead ends: 10 [2019-08-05 10:18:07,692 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:18:07,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-08-05 10:18:07,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-08-05 10:18:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-08-05 10:18:07,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-08-05 10:18:07,695 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-08-05 10:18:07,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:18:07,695 INFO L475 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-08-05 10:18:07,696 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:18:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-08-05 10:18:07,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-05 10:18:07,696 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:18:07,696 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-08-05 10:18:07,697 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:18:07,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:18:07,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1560297824, now seen corresponding path program 2 times [2019-08-05 10:18:07,699 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:18:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:18:07,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 17 conjunts are in the unsatisfiable core [2019-08-05 10:18:07,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:18:07,883 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:18:08,281 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 23 [2019-08-05 10:18:08,302 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:18:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:18:08,332 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:18:08,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-08-05 10:18:08,332 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:18:08,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:18:08,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:18:08,333 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2019-08-05 10:18:08,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:18:08,549 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-08-05 10:18:08,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-08-05 10:18:08,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-08-05 10:18:08,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:18:08,551 INFO L225 Difference]: With dead ends: 12 [2019-08-05 10:18:08,551 INFO L226 Difference]: Without dead ends: 12 [2019-08-05 10:18:08,552 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-08-05 10:18:08,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-08-05 10:18:08,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-08-05 10:18:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-08-05 10:18:08,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-08-05 10:18:08,555 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2019-08-05 10:18:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:18:08,556 INFO L475 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-08-05 10:18:08,556 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:18:08,556 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-08-05 10:18:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-08-05 10:18:08,557 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:18:08,557 INFO L399 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2019-08-05 10:18:08,557 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:18:08,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:18:08,557 INFO L82 PathProgramCache]: Analyzing trace with hash -502547343, now seen corresponding path program 3 times [2019-08-05 10:18:08,559 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:18:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:18:08,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 12 conjunts are in the unsatisfiable core [2019-08-05 10:18:08,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:18:08,732 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:18:08,750 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:18:09,058 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2019-08-05 10:18:09,070 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-08-05 10:18:09,070 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:18:09,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 10:18:09,071 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:18:09,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:18:09,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:18:09,071 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2019-08-05 10:18:09,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:18:09,090 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2019-08-05 10:18:09,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:18:09,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-08-05 10:18:09,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:18:09,091 INFO L225 Difference]: With dead ends: 4 [2019-08-05 10:18:09,092 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:18:09,092 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:18:09,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:18:09,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:18:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:18:09,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:18:09,093 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-08-05 10:18:09,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:18:09,094 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:18:09,094 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:18:09,094 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:18:09,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:18:09,099 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:18:09 BoogieIcfgContainer [2019-08-05 10:18:09,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:18:09,102 INFO L168 Benchmark]: Toolchain (without parser) took 3922.17 ms. Allocated memory was 133.2 MB in the beginning and 170.9 MB in the end (delta: 37.7 MB). Free memory was 109.9 MB in the beginning and 63.3 MB in the end (delta: 46.6 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2019-08-05 10:18:09,102 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 133.2 MB. Free memory is still 111.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 10:18:09,104 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.09 ms. Allocated memory is still 133.2 MB. Free memory was 109.9 MB in the beginning and 108.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 10:18:09,105 INFO L168 Benchmark]: Boogie Preprocessor took 52.74 ms. Allocated memory is still 133.2 MB. Free memory was 108.2 MB in the beginning and 106.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-05 10:18:09,106 INFO L168 Benchmark]: RCFGBuilder took 862.11 ms. Allocated memory is still 133.2 MB. Free memory was 106.4 MB in the beginning and 73.3 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:18:09,107 INFO L168 Benchmark]: TraceAbstraction took 2954.19 ms. Allocated memory was 133.2 MB in the beginning and 170.9 MB in the end (delta: 37.7 MB). Free memory was 72.9 MB in the beginning and 63.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2019-08-05 10:18:09,112 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 133.2 MB. Free memory is still 111.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.09 ms. Allocated memory is still 133.2 MB. Free memory was 109.9 MB in the beginning and 108.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.74 ms. Allocated memory is still 133.2 MB. Free memory was 108.2 MB in the beginning and 106.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 862.11 ms. Allocated memory is still 133.2 MB. Free memory was 106.4 MB in the beginning and 73.3 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2954.19 ms. Allocated memory was 133.2 MB in the beginning and 170.9 MB in the end (delta: 37.7 MB). Free memory was 72.9 MB in the beginning and 63.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 310]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 2.8s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 6 SDslu, 19 SDs, 0 SdLazy, 44 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 4 QuantifiedInterpolants, 2035 SizeOfPredicates, 64 NumberOfNonLiveVariables, 556 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 11/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...